Xolo released beta version of KitKat update for Q700S back in June and said the final version would be available over-the-air (OTA) for the users once the beta testing is complete. Now the stable version of the KitKat update is available for Q700S. The company rolled out the KitKat update for Q1010i and Q1010 recently, as it promised.
The Android 4.4 (KitKat) update brings restyled status and navigation bars, color emoji, printing support, a new camera UI, immersiv mode, lock screen art, easy home screen switching, new email app, new phone dialer with ability to look up contacts directly from the dial pad, under the hood improvements and more.
This update is available over-the-air (OTA) and you can also download the update file from the official Xolo support site and load it to the smartphone manually. You can find out the complete instructions from the Xolo support page.